node client v2

api/clients/mock/node_client_v2.go

@@ -0,0 +1,33 @@
+package mock
+
+import (
+	"context"
+
+	"github.com/Layr-Labs/eigenda/api/clients"
+	corev2 "github.com/Layr-Labs/eigenda/core/v2"
+	"github.com/stretchr/testify/mock"
+)
+
+type MockNodeClientV2 struct {
+	mock.Mock
+}
+
+var _ clients.NodeClientV2 = (*MockNodeClientV2)(nil)
+
+func NewNodeClientV2() *MockNodeClientV2 {
+	return &MockNodeClientV2{}
+}
+
+func (c *MockNodeClientV2) StoreChunks(ctx context.Context, certs []*corev2.BlobCertificate) ([][]byte, error) {
+	args := c.Called()
+	var signatures [][]byte
+	if args.Get(0) != nil {
+		signatures = (args.Get(0)).([][]byte)
+	}
+	return signatures, args.Error(1)
+}
+
+func (c *MockNodeClientV2) Close() error {
+	args := c.Called()
+	return args.Error(0)
+}

api/clients/node_client_v2.go

@@ -0,0 +1,104 @@
+package clients
+
+import (
+	"context"
+	"fmt"
+	"sync"
+
+	commonpb "github.com/Layr-Labs/eigenda/api/grpc/common/v2"
+	nodegrpc "github.com/Layr-Labs/eigenda/api/grpc/node/v2"
+	corev2 "github.com/Layr-Labs/eigenda/core/v2"
+	"google.golang.org/grpc"
+)
+
+type NodeClientV2Config struct {
+	Hostname          string
+	Port              string
+	UseSecureGrpcFlag bool
+}
+
+type NodeClientV2 interface {
+	StoreChunks(ctx context.Context, certs []*corev2.BlobCertificate) (signatures [][]byte, err error)
+	Close() error
+}
+
+type nodeClientV2 struct {
+	config   *NodeClientV2Config
+	initOnce sync.Once
+	conn     *grpc.ClientConn
+
+	dispersalClient nodegrpc.DispersalClient
+}
+
+var _ NodeClientV2 = (*nodeClientV2)(nil)
+
+func NewNodeClientV2(config *NodeClientV2Config) (*nodeClientV2, error) {
+	if config == nil || config.Hostname == "" || config.Port == "" {
+		return nil, fmt.Errorf("invalid config: %v", config)
+	}
+	return &nodeClientV2{
+		config: config,
+	}, nil
+}
+
+func (c *nodeClientV2) StoreChunks(ctx context.Context, certs []*corev2.BlobCertificate) (signatures [][]byte, err error) {
+	if err = c.initOnceGrpcConnection(); err != nil {
+		return nil, err
+	}
+
+	blobCerts := make([]*commonpb.BlobCertificate, len(certs))
+	for i, cert := range certs {
+		blobCerts[i], err = cert.ToProtobuf()
+		if err != nil {
+			return nil, fmt.Errorf("failed to convert blob certificate to protobuf: %v", err)
+		}
+	}
+
+	// Call the gRPC method to store chunks
+	response, err := c.dispersalClient.StoreChunks(ctx, &nodegrpc.StoreChunksRequest{
+		BlobCertificates: blobCerts,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	// Extract signatures from the response
+	if response == nil {
+		return nil, fmt.Errorf("received nil response from StoreChunks")
+	}
+
+	signatures = make([][]byte, len(certs))
+	for i, sig := range response.GetSignatures() {
+		signatures[i] = sig.GetValue()
+	}
+
+	return signatures, nil
+}
+
+// Close closes the grpc connection to the disperser server.
+// It is thread safe and can be called multiple times.
+func (c *nodeClientV2) Close() error {
+	if c.conn != nil {
+		err := c.conn.Close()
+		c.conn = nil
+		c.dispersalClient = nil
+		return err
+	}
+	return nil
+}
+
+func (c *nodeClientV2) initOnceGrpcConnection() error {
+	var initErr error
+	c.initOnce.Do(func() {
+		addr := fmt.Sprintf("%v:%v", c.config.Hostname, c.config.Port)
+		dialOptions := getGrpcDialOptions(c.config.UseSecureGrpcFlag)
+		conn, err := grpc.Dial(addr, dialOptions...)
+		if err != nil {
+			initErr = err
+			return
+		}
+		c.conn = conn
+		c.dispersalClient = nodegrpc.NewDispersalClient(conn)
+	})
+	return initErr
+}

core/data.go

@@ -563,6 +563,14 @@ func (pm *PaymentMetadata) UnmarshalDynamoDBAttributeValue(av types.AttributeVal
 	return nil
 }
 
+func (pm *PaymentMetadata) ToProtobuf() *commonpb.PaymentHeader {
+	return &commonpb.PaymentHeader{
+		AccountId:         pm.AccountID,
+		BinIndex:          pm.BinIndex,
+		CumulativePayment: pm.CumulativePayment.Bytes(),
+	}
+}
+
 // ConvertPaymentHeader converts a protobuf payment header to a PaymentMetadata
 func ConvertPaymentHeader(header *commonpb.PaymentHeader) *PaymentMetadata {
 	return &PaymentMetadata{

core/v2/types.go

@@ -3,11 +3,12 @@ package v2
 import (
 	"encoding/hex"
 	"errors"
+	"fmt"
 	"math"
 	"math/big"
 	"strings"
 
-	pb "github.com/Layr-Labs/eigenda/api/grpc/common/v2"
+	commonpb "github.com/Layr-Labs/eigenda/api/grpc/common/v2"
 	"github.com/Layr-Labs/eigenda/core"
 	"github.com/Layr-Labs/eigenda/encoding"
 	"github.com/consensys/gnark-crypto/ecc/bn254"
@@ -72,7 +73,7 @@ type BlobHeader struct {
 	Signature []byte
 }
 
-func NewBlobHeader(proto *pb.BlobHeader) (*BlobHeader, error) {
+func NewBlobHeader(proto *commonpb.BlobHeader) (*BlobHeader, error) {
 	commitment, err := new(encoding.G1Commitment).Deserialize(proto.GetCommitment().GetCommitment())
 	if err != nil {
 		return nil, err
@@ -126,6 +127,26 @@ func NewBlobHeader(proto *pb.BlobHeader) (*BlobHeader, error) {
 	}, nil
 }
 
+func (b *BlobHeader) ToProtobuf() (*commonpb.BlobHeader, error) {
+	quorums := make([]uint32, len(b.QuorumNumbers))
+	for i, q := range b.QuorumNumbers {
+		quorums[i] = uint32(q)
+	}
+
+	commitments, err := b.BlobCommitments.ToProtobuf()
+	if err != nil {
+		return nil, fmt.Errorf("failed to convert blob commitments to protobuf: %v", err)
+	}
+
+	return &commonpb.BlobHeader{
+		Version:       uint32(b.BlobVersion),
+		QuorumNumbers: quorums,
+		Commitment:    commitments,
+		PaymentHeader: b.PaymentMetadata.ToProtobuf(),
+		Signature:     b.Signature,
+	}, nil
+}
+
 func (b *BlobHeader) GetEncodingParams() (encoding.EncodingParams, error) {
 	params := ParametersMap[b.BlobVersion]
 
@@ -299,6 +320,28 @@ type BlobCertificate struct {
 	RelayKeys []RelayKey
 }
 
+func (c *BlobCertificate) ToProtobuf() (*commonpb.BlobCertificate, error) {
+	if c.BlobHeader == nil {
+		return nil, fmt.Errorf("blob header is nil")
+	}
+
+	blobHeader, err := c.BlobHeader.ToProtobuf()
+	if err != nil {
+		return nil, fmt.Errorf("failed to convert blob header to protobuf: %v", err)
+	}
+
+	relays := make([]uint32, len(c.RelayKeys))
+	for i, r := range c.RelayKeys {
+		relays[i] = uint32(r)
+	}
+
+	return &commonpb.BlobCertificate{
+		BlobHeader:           blobHeader,
+		ReferenceBlockNumber: uint32(c.ReferenceBlockNumber),
+		Relays:               relays,
+	}, nil
+}
+
 type BlobVersionParameters struct {
 	CodingRate              uint32
 	ReconstructionThreshold float64

disperser/apiserver/server_v2_test.go

@@ -51,7 +51,7 @@ func TestV2DisperseBlob(t *testing.T) {
 	assert.NoError(t, err)
 	accountID, err := c.Signer.GetAccountID()
 	assert.NoError(t, err)
-	commitmentProto, err := commitments.ToProfobuf()
+	commitmentProto, err := commitments.ToProtobuf()
 	assert.NoError(t, err)
 	blobHeaderProto := &pbcommonv2.BlobHeader{
 		Version:       0,
@@ -126,7 +126,7 @@ func TestV2DisperseBlobRequestValidation(t *testing.T) {
 		BlobHeader: invalidReqProto,
 	})
 	assert.ErrorContains(t, err, "blob header must contain commitments")
-	commitmentProto, err := commitments.ToProfobuf()
+	commitmentProto, err := commitments.ToProtobuf()
 	assert.NoError(t, err)
 
 	// request with too many quorums

encoding/data.go

@@ -30,7 +30,7 @@ type BlobCommitments struct {
 }
 
 // ToProfobuf converts the BlobCommitments to protobuf format
-func (c *BlobCommitments) ToProfobuf() (*pbcommon.BlobCommitment, error) {
+func (c *BlobCommitments) ToProtobuf() (*pbcommon.BlobCommitment, error) {
 	commitData, err := c.Commitment.Serialize()
 	if err != nil {
 		return nil, err